Results 141 to 150 of about 2,688,953 (298)

Lactate potentiates NMDA receptor currents via an intracellular redox mechanism targeting GluN2B subunits: implications for synaptic plasticity

The Journal of Physiology, EarlyView.
Abstract figure legend Astrocyte‐derived lactate enhances neuronal NMDA receptor (NMDAR) function and synaptic plasticity through a redox‐ and CaMKII‐dependent mechanism. Lactate enters neurons via monocarboxylate transporters (MCTs) and is oxidized by lactate dehydrogenase (LDH) to pyruvate, generating NADH and increasing the intracellular NADH/NAD ...
Hubert Fiumelli, Gabriel Herrera‐López, Fouad Lemtiri‐Chlieh, Lorène Mottier, John Girgis, Carine Ben‐Adiba, Pascal Jourdain, Nicolò Carrano, Hanan Mahmood, Amanda Ooi, Stefan T. Arold, Monica Di Luca, Fabrizio Gardoni, Pierre J. Magistretti   +13 more
wiley   +1 more source

Temporal switching and cell‐to‐cell variability in Ca2+ release activity in mammalian cells

Molecular Systems Biology, 2009
Genetically identical cells in a uniform external environment can exhibit different phenotypes, which are often masked by conventional measurements that average over cell populations.
Naotoshi Nakamura, Toshiko Yamazawa, Yohei Okubo, Masamitsu Iino   +3 more
doaj   +1 more source

Systems level circuit model of C. elegans undulatory locomotion: mathematical modeling and molecular genetics [PDF]

, 2007
To establish the relationship between locomotory behavior and dynamics of neural circuits in the nematode C. elegans we combined molecular and theoretical approaches. In particular, we quantitatively analyzed the motion of C.
Cronin, Chris J., Karbowski, Jan, Schindelman, Gary, Seah, Adeline, Sternberg, Paul W.   +4 more
core   +1 more source

Mechanistic insights into sex differences in atrial electrophysiology and arrhythmia vulnerability through sex‐specific computational models

The Journal of Physiology, EarlyView.
Abstract figure legend Sex‐specific models of the human atrial myocyte in normal sinus rhythm (nSR) and chronic atrial fibrillation (cAF) revealed increased alternans susceptibility in cAF males and DADs in females, driven primarily by ICaL and ryanodine receptor remodelling.
Nathaniel T. Herrera, Haibo Ni, Charlotte E. R. Smith, Yixuan Wu, Dobromir Dobrev, Stefano Morotti, Eleonora Grandi   +6 more
wiley   +1 more source

Mitochondria and neuroprotection in stroke: Cationic arginine-rich peptides (CARPs) as a novel class of mitochondria-targeted neuroprotective therapeutics [PDF]

, 2018
Stroke is the second leading cause of death globally and represents a major cause of devastating long-term disability. Despite sustained efforts to develop clinically effective neuroprotective therapies, presently there is no clinically available ...
Anderton, Ryan S, Knuckey, Neville W, MacDougall, Gabriella, Mastaglia, Frank L, Meloni, Bruno P   +4 more
core   +1 more source

Cellular mechanisms of radiation‐induced myocyte dysfunction: effects on calcium handling, ion channel regulation and mitochondrial energetics

The Journal of Physiology, EarlyView.
Abstract figure legend Dose‐dependent effects of radiation on cardiac electrophysiology and arrhythmia susceptibility. At low radiation doses (left), increased reactive oxygen species (ROS) initiate an ROS–Ca2+ positive feedback loop involving calcium/calmodulin‐dependent protein kinase II (CaMKII) activation, enhanced L‐type Ca2+ current (ICaL ...
Hannah M. Zukowski, Colleen E. Clancy
wiley   +1 more source

Small‐conductance Ca2⁺‐activated K⁺ channels in cardiac excitation–contraction coupling: Bridging mitochondria, sarcolemma and antiarrhythmic therapy

The Journal of Physiology, EarlyView.
Abstract figure legend Mitochondrial SK channel enhancement reduces cardiac arrhythmia trigger. Spontaneous sarcoplasmic reticulum (SR) Ca2+ release via hyperactive RyR2s underlies an increased arrhythmia trigger, promoting early and delayed afterdepolarizations during stress. Hyperactive RyR2s causes rise in cytosolic [Ca2+] during diastole. Clearance
Dmitry Terentyev, Alexey V. Glukhov, Vladimir Bogdanov, Aleksei S. Averin, Roland Veress, Bum‐Rak Choi, Shanna Hamilton, Andriy E. Belevych   +7 more
wiley   +1 more source

Overshoot in biological systems modeled by Markov chains: a nonequilibrium dynamic phenomenon

, 2014
A number of biological systems can be modeled by Markov chains. Recently, there has been an increasing concern about when biological systems modeled by Markov chains will perform a dynamic phenomenon called overshoot.
Jia, Chen, Jiang, Daquan, Qian, Minping
core   +1 more source

Ion channels: structural basis for function and disease. [PDF]

, 1996
Ion channels are ubiquitous proteins that mediate nervous and muscular function, rapid transmembrane signaling events, and ionic and fluid balance. The cloning of genes encoding ion channels has led to major strides in understanding the mechanistic basis
Goldstein, SA
core   +1 more source

Caenorhabditis elegans as an in vivo model system for human inherited primary arrhythmia syndromes

The Journal of Physiology, EarlyView.
Abstract figure legend Most genes involved in inherited primary arrhythmia syndromes (IPAS) are conserved in Caenorhabditis elegans, where genetic manipulation enables functional characterization of variants, identification of regulatory proteins, and in vivo drug testing.
Antoine Delinière, Thomas Boulin, Maëlle Jospin, Alexandre Janin, Gilles Millat, Philippe Chevalier, Olga Andrini   +6 more
wiley   +1 more source